Unwinding head for bolts of fabric



- May 8, 1945.

N. OBEDIN 2,375,679

' UNWINDING HEAD FORBOLTS OF FABRIC Filed Sept. 14, 1944 NATHAN OBEDININVENTOR ATTORNEY Patented May 8, 1945 2,375,679 UNWINDI'NG HEADFORBOLTS F. FABRIC Nathan Obedin, Brooklyn, N. Y. 3 ApplicationSeptember 14, 1944, Serial Masseuse 3 Claims. (01.242 13).

Thisinvention relates to. improvements in devices for unwinding boltsofcloth, and an object of this invention resides in the provision of amounting for rotatably supporting a bolt of .cloth upon a frame forconvenientlyunwinding lengths of cloth from the bolt prior tolaying outthe cloth for cutting.

Another object of this invention isto provide on an enlarged scale, thesection beingtaken ason line -5 in Figure 2.

In the illustrated embodiment of the invention the numeral indicates arotatable supporting and mounting head for bolts of fabric, The head 10comprises an elongated shaft ll having blade members l2 slidably mountedthereon; The shaft a shaft having blade members adjustable lengthwise ofthe shaft and arranged in pre-aligned relation for embedding the blademembers in the end portions ofa bolt of cloth to accommodate boltsofdifferent lengths. J

Another-object of this invention is to provide two slidable blademembers for engaging the op:

posite ends of a bolt of cloth for'supporting the bolt, and comprisingbifurcated blade members spaced apart from each other on. theshaft andseating in keyways on diametrically opposite Sides of the shaft andbeing insertible in the bolt be tween the'core boardand the cloth,

Another object of thisinvention residesin the employment of flattriangular blade members made of sheet metal, each blade member beingcentrally slotted so as to form 'avbifurcation and themetal at thebifurcated portion being seated in diametrically oppositekeyways in theshaft,

whereby the edgesof the blade members at the slot are covered andconcealed and including the apex portion of the blade member, therespective blade members being-insertabletin a bolt of. fabric withoutdanger of tearing or, injuringjdelicate fabric.

With the above and other objects in view, the invention will behereinafter more particularly described, .and the combination andarrangement fo parts will be shown in the accompanying drawing andpointed out in the claims which form part of this specification,

Reference will now be had to the drawing,

wherein like numerals of reference designate corresponding partsthroughout the several views, in which:

Figure 1 is a front elevation of my fabric bolt mounting and supportinghead rotatably Isupported in bearings in an upright frame.

Figure 2 is a top view of the mounting and supporting head.

Figure 3 is a plan view of one-of the blade members.

Figure 4 is a cross-sectional view of the shaft on an enlarged scale,showing the diametrically positioned keyways, the section being taken ason line 44 inFigure 2. 1

Figure 5 is a cross-sectional View of'the head,

and. rotatably supported. Thelshaft II has a circumferentially groovedportion 11 at one end, providing a shaft portion of smaller diameteradapted to rest in one of the bearings Hi. The side edges defining thegrooved portion ll provide abutments on each side of the bearing whichretain the shaft against movement in an axial direction. i

;As best shown in Figures 2 and 4, the shaft ll has keyways l8 which arediametrically positioned. The. keyways are. spaced apart leaving themiddle portion of the shaft solid and peripherally intact; The strengthof the shaft I l is thus maintained at the location of maximumdeflection. The keyways l8 are axially alined and maintain the blademembers .I 2 in axial alinement.

Each blade member [2 has an apertured collar for the shaft I l. Thecollar 20 has a screw 2! threaded therein, the screw serving oradjustably securing the blade member on theshaft. In

tegral with the collar-.20 is an elongated crossbar 22. v

The bar 22 is positioned in offset relation from the aperture in thecollar so as to clear the shaft ll passing therethrough. Secured to thebar 22.

by screws 23 is a sheet metal plate 24.

The plate 24 has an offset portion 25 extending the blade member I2 isslidable lengthwise of the shaft.

. It is to be noted that the side edges of the arms 28 at thebifurcation 21 are covered and concealed by the shaft I l and includingend. portions 29 of the arms. 3

the pointed free The core 30 of the bolt of fabric 3| is usuallyconstructed of frail cardboard. The shaft 1 i, being longer than thebolt of fabric, provides a reinforcement by which the bolt of fabric maybe safely rotatably supported.

In the operation of the invention, one of the blade members I2 isremoved from the shaft to allow the shaft to be inserted into a bolt offabric. The bolt is then moved up to and against the offset portion -ofthe blade member. The other blade member is then mountedon the shaft andinserted with the free end portions 29 of the arms 28 entering theopposite end of the bolt until.

the distance between the opposite offset portions 25 equals the width ofthe bolt; The screw in the collar 20 of the last mentioned blade memberis turned against the shaft to hold the blade member in this engagedposition.

The concealed free end portions of the blade members are insertablebetween the fabric layers and-the core without any danger: of tearing ordamaging the fabric.

It is-to be noted that" the blade members 12 are-held to the shaft H bythekeyways and that the free end portions'zil'of the arms ZB are rigidlyheld and prevented from swaying.

The unwinding head herein disclosed is adapted for use in clothmeasuring machines, cloth spreading 'machines and the like. For thepurpose of this disclosure the unwindingv head: is shown mounted in an'upright frame having abase on which'the unwound cloth may be spread.

' Inaccordance with the patent: statutes 1'. have described andillustratedthe preferred embodimentof my invention, but it: willbeunderstood that various changes and modifications can be madethereinwithout departing fr0m.the spirit of" the invention as defined: by theappended claims;

Iclaim:

1. A supporting and mounting head forunwinding a belt of fabric having arectangular core-at*its central portion; comprising an elon gated shafthaving two-diametricallypositioned keyways at each end, twocentrallyslotted triangular blade members having bifurcated arms, the sideedge-portions of said-arms at said slot being seated in'said keyways andadapting said blade members for-slidable movement relative to saidshaft, said-arms being integral witha-crossbar; said-cross-bar-beingpositioned in-offs'et relationfrom said: armsgand being-clear of saidshaft, said cross-bar providing an abutment for saidbolt of'fabric;means for detachably securing said blade member on said shaft, saidkeyways being in longitudinal alinement and causing said blade membersto be in alinement while at opposite'ends of said shaft and in alinementwith said core, the edges of said blade members at said bifurcationbeing covered and concealed by said shaft and including the apex portionof said blade member.

2. In a rotary supporting and mounting head fora bolt of fabric having acore; atzits central portion, an elongated shafthavingtwo elongatedkeyways at each end, said keyways being on diametrically opposite sidesof said shaft, two centrally slotted blade members having bifurcatedarms; the side edge portions of said arms at said slot being seated insaid keyways and adapting said blade members for slidable movementlengthwise of said'shaft, said arms being integral with a cross-bar,said cross-bar being positioned in offset relation from said arms andbeing clear ofsaid shaft; said cross-bar: providing an abutment for saidbolt of fabric, means for"detach-- ably securing said blade members i onsaid shaft; said keyways being in longitudinal alinement and causingsaid blade members to be in; alinement whileat oppositeendsof saidshaft-and in alinement with said core, the side edges-of said blademembers at-said bifurcation being covered and concealedby said-shaftandlineluding the pointed free endzportionsofsaid armsa v I 3. Inarotary supporting and mounting head for a bolt of fabric anelongatedshaft having two elongated keyways at each end; said keyways being ondiametricallybpposite sides of 'said shaft, two centrally slotted blademembers having bifurcated arms, the side=edge portions of said arms atsaid slot being seated in said keyways and adapting said blade membersfor slidable movement lengthwise of said shaft; said: arms beingintegral with a cross-bar; said cross-'bar'being positioned in offsetrelationfrom said armsand beingclear' of said' shaft; said cross-banproviding' an abutment for: said-bolt of fabric, means for detachably'securing said blade members on= said shaft, said key-Waysbeing inlongitudinal alinementand causin said 1 blade members tube in alinementwhile at opposite endsof said shaft, the side edges ofsaidblade'-rnembers at said bifurcation being coveredandconcealed by saidshaft and including: the pointed free end portions ofsaid arms, saidfree end portions being' rigidly held and prevented from'swaying.

NATHAN OBEDIN.

